Comment by inglor_cz

The Slovaks ultimately got federalization of Czechoslovakia from the crisis (1969), which both distracted them and made their memories less negative.

As far as Hungary goes, I asked my friend who studied Hungarian history. He explained to me that while the Soviet invasion was very traumatic, the subsequent Kádár "goulash socialism" was a lot more lenient on the people than all the other Soviet Bloc regimes, and that the Hungarians made an incorrectly confident conclusion that losing a small war to the Russians is not catastrophic.

Of course, this is NOT the experience of basically anyone else who happened to be in a similar situation. A potential puppet regime of Russia in Ukraine wouldn't look like Kádárs by any means, it would rather look like the Kadyrovian microstate in Chechnya, minus the Islam of course.